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      Opportunities for big data in conservation and sustainability

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          Abstract

          Big data reveals new, stark pictures of the state of our environments. It also reveals ‘bright spots’ amongst the broad pattern of decline and—crucially—the key conditions for these cases. Big data analyses could benefit the planet if tightly coupled with ongoing sustainability efforts.

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          Most cited references18

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          High-resolution global maps of 21st-century forest cover change.

          Quantification of global forest change has been lacking despite the recognized importance of forest ecosystem services. In this study, Earth observation satellite data were used to map global forest loss (2.3 million square kilometers) and gain (0.8 million square kilometers) from 2000 to 2012 at a spatial resolution of 30 meters. The tropics were the only climate domain to exhibit a trend, with forest loss increasing by 2101 square kilometers per year. Brazil's well-documented reduction in deforestation was offset by increasing forest loss in Indonesia, Malaysia, Paraguay, Bolivia, Zambia, Angola, and elsewhere. Intensive forestry practiced within subtropical forests resulted in the highest rates of forest change globally. Boreal forest loss due largely to fire and forestry was second to that in the tropics in absolute and proportional terms. These results depict a globally consistent and locally relevant record of forest change.
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            Four billion people facing severe water scarcity

            Global water scarcity assessment at a high spatial and temporal resolution, accounting for environmental flow requirements.
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              China and India lead in greening of the world through land-use management

              Satellite data show increasing leaf area of vegetation due to direct (human land-use management) and indirect factors (climate change, CO2 fertilization, nitrogen deposition, recovery from natural disturbances, etc.). Among these, climate change and CO2 fertilization effect seem to be the dominant drivers. However, recent satellite data (2000–2017) reveal a greening pattern that is strikingly prominent in China and India, and overlapping with croplands world-wide. China alone accounts for 25% of the global net increase in leaf area with only 6.6% of global vegetated area. The greening in China is from forests (42%) and croplands (32%), but in India is mostly from croplands (82%) with minor contribution from forests (4.4%). China is engineering ambitious programs to conserve and expand forests with the goal of mitigating land degradation, air pollution and climate change. Food production in China and India has increased by over 35% since 2000 mostly due to increasing harvested area through multiple cropping facilitated by fertilizer use and surface/ground-water irrigation. Our results indicate that the direct factor is a key driver of the “Greening Earth”, accounting for over a third, and likely more, of the observed net increase in green leaf area. They highlight the need for realistic representation of human land-use practices in Earth system models.
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                Author and article information

                Contributors
                rebecca.runting@unimelb.edu.au
                Journal
                Nat Commun
                Nat Commun
                Nature Communications
                Nature Publishing Group UK (London )
                2041-1723
                24 April 2020
                24 April 2020
                2020
                : 11
                : 2003
                Affiliations
                [1 ]ISNI 0000 0001 2179 088X, GRID grid.1008.9, School of Geography, , The University of Melbourne, ; Parkville, VIC Australia
                [2 ]ISNI 0000 0000 9320 7537, GRID grid.1003.2, School of Earth and Environmental Sciences, , The University of Queensland, ; Brisbane, QLD Australia
                [3 ]ISNI 0000 0001 2156 9982, GRID grid.266876.b, Natural Resource and Environmental Studies Institute, , University of Northern British Columbia, ; Prince George, BC Canada
                [4 ]Wildlife Conservation Society, Global Conservation Program, New York, NY USA
                Author information
                http://orcid.org/0000-0002-2605-6104
                http://orcid.org/0000-0003-4942-1984
                Article
                15870
                10.1038/s41467-020-15870-0
                7181767
                32332744
                65ae0b31-c8ae-43c7-b040-958ed2945133
                © The Author(s) 2020

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                History
                : 6 February 2020
                : 1 April 2020
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                environmental sciences,policy
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                environmental sciences, policy

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